Weston Stainless, located in Midland, UK, is a major supplier and manufacturer of high-quality stainless steel products for diverse industrial uses. One of its premium products is Stainless Steel 347H Tubing, which is greatly prized for its excellent high-temperature strength, corrosion resistance, and excellent mechanical properties. Coming in seamless, welded, ERW, and fabricated shapes, this tube is constructed of Grade 347H stainless steel, an austenitic columbium-stabilized alloy with a higher carbon content for added strength. With excellent resistance to oxidation and durability, these tubes are suitable for industries demanding reliability under harsh conditions.
Stainless Steel 347H Tubing is made up of iron (balance), 17-19% chromium, 9-13% nickel, 0.04-0.10% carbon, columbium, and trace amounts of manganese and silicon. It has a tensile strength of about 75 ksi (515 MPa), yield strength of 30 ksi (205 MPa), and 40% elongation. Its physical properties are a density of 7.93 g/cm³, a thermal conductivity of 16.3 W/m·K, and a melting point of about 1400°C. These properties provide superior thermal stability, high oxidation resistance, and good mechanical strength for severe applications.
| Specifications | ASTM A/ASME SA213/A249/A269/A312/A358 |
| Dimensions | ASTM, ASME, and API |
| Size | 1/8″NB TO 30″NB IN |
| 304 Pipes & Tubes Size | 1/2″ NB – 16″ NB |
| ERW 304 Pipes & Tubes | 1/2″ NB – 24″ NB |
| EFW 304 Pipes & Tubes | 6″ NB – 100″ NB |
| Thickness | 0.3mm – 50 mm |
| Specialized in | Large Diameter Size |
| Schedule | SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic, Oval, U Shape, Pan Cake Coils, Coiled Etc |
| Length | Single Random, Double Random & Required Length. |
| End | Plain End, Beveled End, Treaded |
| Stainless Steel | Nickel | Magnesium | Silicon | sulfur | Carbon | Chromium | Phosphorus | Molybdenum | Nitrogen | |
| 347H | Minimum | 9 | 00.04 | 17 | 3 | |||||
| Maximum | 13 | 2 | 1 | 00.030 | 00.10 | 19 | 00.045 | 4 | ||
| SS Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B | Brinell | ||||
| SS 347H | 515 | 205 | 40 | 92 | 201 |
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Stainless Steel 347H Tubing finds extensive applications in aerospace, chemical processing, and power generation industries because of its high-temperature oxidation resistance and creep stress resistance. It is used in heat exchangers, superheater tubes, furnace parts, and high-pressure steam piping. The excellent weldability and mechanical properties of the tubing qualify it for the transportation of fluids in petrochemical facilities, refineries, and boiler applications. Its higher carbon content provides toughness, thus ensuring reliability and durability in extended high-temperature industrial applications.
This tubing comes in various sizes, typically ranging from 1/8″ to 12″ in diameter. It offers high resistance to oxidation and corrosion, particularly in high-temperature environments. Ideal for applications requiring robust strength and durability.
Available in diameters from 1/2″ to 12″, this tubing is welded and offers similar high-temperature strength as seamless options. It is highly resistant to intergranular corrosion and is used in environments exposed to sulfuric and nitric acids.
These tubes are generally available in sizes from 1/4″ to 2″ OD. They are specifically designed for high-efficiency heat transfer and offer excellent resistance to oxidation and sulfidation. Suitable for use in high-temperature heat exchangers.
Instrumentation tubing sizes typically range from 1/16″ to 1″. It is designed for precise and reliable measurements in harsh environments, providing excellent resistance to corrosion and high temperatures.
Available in diameters from 1/2″ to 5″, these tubes are designed to withstand high pressures and temperatures in boilers. They offer strong resistance to oxidation and carburization, making them ideal for high-temperature steam applications.
These tubes are usually sized from 1/2″ to 3″ in diameter and are formed into a U-shape for use in heat exchangers and other applications. They provide high resistance to corrosion and high-temperature deformation.
Condenser tubes come in sizes from 1/2″ to 3″ OD. They are designed for efficient heat transfer and resist corrosion from various coolants and environmental conditions, ensuring longevity in condenser systems.
Weston Stainless provides Stainless Steel 347H Tubing with test certificates, such as mill test reports (MTR), third-party inspection, and compliance certification. The tubing is properly packaged in wooden crates, pallets, or protective coverings to ensure safe transportation without damage. The company provides prompt worldwide delivery through air, sea, or land transportation, preserving product integrity and customer satisfaction with effective and efficient logistics solutions. therefore, ideal for high temperature applications. It is used in the petrochemical, pharmaceutical, power generation, and aerospace industries. Due to its excellent stability at high temperatures, the tube is suitable for heat exchangers, furnace components, and air filters. Additionally, 347H is resistant to intergranular corrosion, which makes it suitable for welding applications. Its durability and resistant properties against scaling and pitting make it very effective in harsh environments where other materials would quickly wear out.
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